Welding wires with high impact toughness
AssigneeThe ESAB Group, Inc.
InventorsWoong Kil, Woo Sung Yang, Young Joon Kim
Life of this patent
Estimating the term…
Abstract
A welding wire is disclosed including a ferrous metal welding material and a flux material including flux ingredients. The flux ingredients include, in weight percent based on the total weight of the welding wire: no greater than 1.91 aluminum, no greater than 1.02 manganese, less than 1.50 magnesium, and no greater than 0.02 rare earth metal oxide, where the rare earth metal oxide comprises at least 99 wt % cerium oxide based upon total weight of rare earth metal oxide. Resulting welds have a maximum diffusible hydrogen content of 5 mL/100 g or less. Resulting welds also have a Charpy V-notch toughness at −40° F. of at least 100 ft-lbs (135.6 Joules).
Claims21
A welding wire comprising a ferrous metal welding material and a flux material including flux ingredients, the flux ingredients comprising, in weight percent based on the total weight of the welding wire:
- 1.70-1.91 aluminum;
- no greater than 1.02 manganese;
- less than 1.50 magnesium, wherein magnesium is present in the flux material;
- and
- no greater than 0.02 rare earth metal oxide, wherein rare earth metal oxide is present in the flux material;
- wherein the rare earth metal oxide comprises at least 99 wt % cerium oxide based upon total weight of rare earth metal oxide.
A flux composition for a welding wire, the flux composition comprising, in weight percent based on the total weight of the welding wire:
- 1.70-1.91 aluminum;
- no greater than 1.02 manganese;
- less than 1.50 magnesium, wherein magnesium is present in the flux material;
- and
- no greater than 0.02 rare earth metal oxide, wherein rare earth metal oxide is present in the flux material;
- wherein the rare earth metal oxide comprises at least 99 wt % cerium oxide based upon total weight of rare earth metal oxide.
Dependencies are inferred from the claim text.